A would-be quitter's therapist has him sit in front of a machine that blows smoke in his face while he is smoking one cigarette after another. This technique is called
a. extinction smoking. c. aversive smoking.
b. rapid smoking. d. none of these.
B
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________ have a slightly higher risk of developing schizophrenia and also tend to develop the disorder at a(n) _______ age
In natural, or quasi-, experiments,
A) random assignment helps protect against reduction in the accuracy of the findings. B) researchers combine random assignment with the matching technique. C) cause-and-effect inferences cannot be made. D) lack of random assignment substantially reduces the precision of the research.
A scientist studies a group of three people who have a rare genetic condition. By conducting ________, the scientist gathers significant insight on the condition.
a. archival research b. a clinical study c. naturalistic observation d. a cross-sectional study
According to the text, about what percent of retired U. S. adults over age 65 rely on Social Security as virtually their only source of income?
a. about 8% b. about 15% c. about 31% d. about 40%